1.单选题- (共2题)

下列说法中不正确的是
A.收集到的V L气体全为 NO |
B.过滤用到的玻璃仪器是:烧杯、漏斗、玻璃棒 |
C.操作Ⅱ应是洗涤 |
D.铜的质量分数为:![]() |
A.充电时阴极区电解质溶液pH降低 |
B.在使用过程中此电池要不断补充水 |
C.放电时NiO(OH)在电极上发生氧化反应 |
D.充电时阳极反应为:Ni(OH)2-e-+OH-=NiO(OH)+H2O |
2.选择题- (共3题)
As our family are getting ready for the annual holiday of Thanksgiving, which is probably the most important holiday in the U.S because it's celebrated by people of all faiths. I think back to a cold November day more than twenty years ago. It was a day when my husband and I, married just about three months, got stuck on I -89 in Vermont when our car broke down.
We had just visited my husband's parents in Vermont, and with a huge turkey they gave us slowly thawing (解冻)in the trunk of our old car, we were heading back to our apartment in Boston to celebrate our first Thanksgiving together. Our car broke down half an hour after we got on the highway. And it was raining. Back to then, not everyone had a cell phone, and in those days if you broke down along a lonely stretch of a highway far from the nearest emergency call box in cold November rain, it wasn't fun.
Fortutiously for us, a van with a bunch of people coming back from a ski trip stopped andasked if we needed help. They gave us a ride to the nearest gas station, from where we could phone my father-in-law and asked him for help. My father-in-law arranged for :he car to be towed (拖引), and drove us all the way to Boston that day.
So as we sit down to dinner and think of all the things we can be thankful for tonight, I want to say “thank you” to the strangers on I -89 some twenty years ago for giving a young couple a ride when their car with a frozen turkey in the trunk broke down.
Never underestimate the difference you can make to the lives of others by one small act of kindness. Step forward, reach out and help. This week, reach to someone that might need a lift.
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【1】题量占比
单选题:(2道)
选择题:(3道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:0
5星难题:0
6星难题:1
7星难题:0
8星难题:0
9星难题:1